Liquid-cooled compact heat exchanger for digital radar array modules

Abstract

The application discloses a liquid-cooled compact heat exchanger for a digital radar array module, which comprises eight component cold plates and one distributor, and is a compact heat exchanger combined with series connection and parallel connection of liquid-cooled pipelines, wherein the inside of each component cold plate is a deep-hole flow channel, four T / R components are integrated on the front and back surfaces of each component cold plate, and the heat of the T / R components is taken away by flowing liquid; the distributor serves as an installation carrier of the eight component cold plates, has two sets of shunt static pressure cavities and converging static pressure cavities in the inside, realizes parallel connection of the four component cold plates through the two sets of shunt static pressure cavities and converging static pressure cavities, and completes series connection of the four component cold plates on the left and the four component cold plates on the right through the series connection pipeline; the cross-sectional area of the shunt static pressure cavities and the converging static pressure cavities is much larger than that of the water inlet flow channel and the water outlet flow channel, and the uniformity of liquid distribution is realized. The application realizes installation of high-density cold plates, distribution and uniform flow of cooling liquid, and provides technical support for thermal design of the digital radar array module.

Description

Technical Field

[0001] This invention belongs to the field of digital array radar, specifically, it relates to the thermal design technology of miniaturized, high-density integrated radar digital arrays. Background Technology

[0002] Radar digital arrays are highly integrated with concentrated heat sources. Thermal design is crucial for their proper operation. Effectively utilizing space in the design of cooling pipes is a key technology determining the success of the thermal design. If all cooling pipes for the array's cold plate are designed in series, it increases flow resistance and creates a significant temperature difference between the coolant inlet and outlet, affecting radar stability. A certain radar digital array is small, with a cross-sectional area of ​​only 188×210 (mm), and has a high degree of integration. Due to space constraints, a fully parallel pipe design for the array's cold plate is not feasible. Therefore, this application proposes a design that combines series and parallel connections to achieve low-resistance pipe design within limited space. This invention is proposed to integrate and dissipate heat from 32 T / R components within a cross-sectional area of ​​188×210 (mm). Summary of the Invention

[0003] To meet the heat dissipation requirements of low flow resistance and high integration in radar digital arrays, this invention provides a liquid-cooled compact heat exchanger for digital radar array modules.

[0004] The technical solution adopted in this invention is as follows: a liquid-cooled compact heat exchanger for a digital radar array module includes eight component cold plates and a distributor serving as the support for the component cold plates; the distributor distributes and evenly distributes the coolant through a series-parallel combination. The eight component cold plates, serving as the support for the T / R module installation, have deep-hole flow channels internally, designed with a 1-way split-2-way flow channel to increase the heat dissipation area and reduce flow resistance. The inlet and outlet of the distributor are located on the same side, and the inlet and outlet flow channels connect two sets of split static pressure chambers and a confluence static pressure chamber. The split static pressure chambers achieve 1-way splitting and even distribution of the coolant into four paths, while the confluence static pressure chambers achieve the confluence of four paths into one path of coolant.

[0005] Furthermore, the component cold plates, consisting of 8 components, are mounted on the distributor using screws. The sealing method employs O-ring seals, and pin holes are designed for positioning during installation.

[0006] Furthermore, the inlet and outlet water channels of the distributor adopt a deep-hole design. The coolant enters the first splitting static pressure chamber through the inlet water channel, realizing the first splitting and equalization of the flow from 1 channel to 4 channels, supplying liquid to the cold plates of the four parallel components on the right. After passing through the four parallel components on the right, the coolant enters the first converging static pressure chamber, realizing the first convergence of the four channels into one. After the convergence, the coolant enters the second splitting static pressure chamber through the series flow channel, realizing the second splitting and equalization of the flow from 1 channel to 4 channels, supplying liquid to the cold plates of the four parallel components on the left. After passing through the four parallel components on the left, the coolant enters the second converging static pressure chamber, realizing the second convergence of the four channels into one. After the second convergence, the coolant returns through the outlet.

[0007] Furthermore, the distributor achieves parallel connection of the four component cold plates through two sets of split static pressure chambers and a junction static pressure chamber, and completes the series connection of the four component cold plates on the left and the four component cold plates on the right through series pipelines.

[0008] Furthermore, the cross-sectional areas of the distributor's split static pressure chamber and the confluence static pressure chamber are much larger than the cross-sectional areas of the inlet and outlet water channels, thus achieving uniformity in coolant distribution.

[0009] The beneficial effects of this invention are as follows: This invention completes a liquid-cooled compact heat exchanger for digital radar array modules, which effectively reduces the flow resistance of the cold plate assembly; and makes reasonable use of limited space to realize a miniaturized liquid-cooled heat exchanger design with low flow resistance and high integration. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention;

[0011] Figure 2 This is a schematic diagram of the internal flow channel structure of the component cold plate of the present invention;

[0012] Figure 3 This is a schematic diagram of the shunt structure of the present invention;

[0013] Figure 4 This is a schematic diagram of the splitting static pressure chamber and the confluence static pressure chamber of the splitter of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] Example 1:

[0016] Figure 1 1 is a structural schematic diagram of the present invention; 2 is a schematic diagram of the internal flow channel structure of the component cold plate of the present invention; Figure 3 This is a schematic diagram of the shunt structure of the present invention; Figure 4This is a schematic diagram of the splitting static pressure chamber and the confluence static pressure chamber of the splitter of the present invention.

[0017] like Figures 1 to 4 As shown, the liquid-cooled compact heat exchanger for a digital radar array module provided by this invention includes eight component cold plates 1 and a distributor 2 serving as the support for the component cold plates. The distributor distributes and evenly distributes the coolant through a series-parallel combination. The eight component cold plates, serving as the support for the T / R module installation, have deep-hole flow channels internally, designed with a 1-to-2 flow split to increase the heat dissipation area and reduce flow resistance. The inlet and outlet of the distributor are located on the same side, connecting two sets of split static pressure chambers and a confluence static pressure chamber. The split static pressure chambers achieve 1-to-4 flow splitting and even distribution of the coolant, while the confluence static pressure chambers achieve 4-to-1 convergence of the coolant.

[0018] Furthermore, the component cold plates, consisting of 8 components, are mounted on the distributor using screws. The sealing method employs O-ring seals, and pin holes are designed for positioning during installation.

[0019] Furthermore, the inlet and outlet water channels of the distributor adopt a deep-hole design. The coolant enters the first splitting static pressure chamber 22 through the inlet water channel 21, realizing the first splitting and equalization of 1-way to 4-way, supplying liquid 1 to the cold plates of the four parallel components on the right. After passing through the four parallel components on the right, the coolant enters the first converging static pressure chamber 23, realizing the first convergence of 4-way to 1-way. After the convergence, the coolant enters the second splitting static pressure chamber 25 through the series flow channel 24, realizing the second splitting and equalization of 1-way to 4-way, supplying liquid to the cold plates of the four parallel components on the left. After passing through the four parallel components on the left, the coolant enters the second converging static pressure chamber 26, realizing the second convergence of 4-way to 1-way. After the second convergence, the coolant returns through the outlet water channel 27.

[0020] Furthermore, the distributor achieves parallel connection of the four component cold plates through two sets of split static pressure chambers and a junction static pressure chamber, and completes the series connection of the four component cold plates on the left and the four component cold plates on the right through series pipelines.

[0021] Furthermore, the cross-sectional areas of the distributor's split static pressure chamber and the confluence static pressure chamber are much larger than the cross-sectional areas of the inlet and outlet water channels, thus achieving uniformity in coolant distribution.

Claims

1. A liquid-cooled compact heat exchanger for a digital radar array module, characterized in that, include: 8 cold-plate components and 1 distributor, among which, The interior of each component's cold plate has deep-hole flow channels, and four T / R components are integrated on both sides of each component's cold plate. The heat of the T / R components is carried away by the coolant flowing in the deep-hole flow channels. The distributor serves as the mounting carrier for the 8-piece cold plate assembly. The distributor has two sets of split static pressure chambers and a junction static pressure chamber inside. Through the two sets of split static pressure chambers and the junction static pressure chamber, the 4-piece cold plate assembly is connected in parallel. The 4-piece cold plate assembly on the left side is connected in series with the 4-piece cold plate assembly on the right side through the series pipeline. The inlet and outlet channels of the distributor are located on the same side. The inlet and outlet channels connect two sets of split static pressure chambers and a converging static pressure chamber. The split static pressure chamber realizes the splitting and equalization of the coolant from 1 to 4 channels, and the converging static pressure chamber realizes the converging of the coolant from 4 channels to 1 channel. Eight cold plates are mounted on the distributor using screws, with O-rings for sealing and pin holes for positioning. The inlet and outlet channels of the distributor adopt a deep-hole design. The coolant enters the first splitting static pressure chamber through the inlet channel, realizing the first splitting and equalization of the flow from one channel to four channels, supplying coolant to the four parallel component cold plates on the right. After passing through the four parallel component cold plates on the right, the coolant enters the first converging static pressure chamber, realizing the first convergence of the four channels into one. After the convergence, the coolant enters the second splitting static pressure chamber through the series channel, realizing the second splitting and equalization of the flow from one channel to four channels, supplying coolant to the four parallel component cold plates on the left. After passing through the four parallel component cold plates on the left, the coolant enters the second converging static pressure chamber, realizing the second convergence of the four channels into one. After the second convergence, the coolant returns through the outlet channel. The distributor achieves parallel connection of four cold plates through two sets of split static pressure chambers and a junction static pressure chamber; and completes the series connection of the four cold plates on the left and the four cold plates on the right through series pipelines. The cross-sectional areas of the splitting static pressure chamber and the confluence static pressure chamber of the distributor are at least 1.5 times larger than the cross-sectional areas of the inlet and outlet water channels, thereby achieving uniformity of coolant distribution.

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